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Modeling and superposition of multiple protein structures using affine transformations: analysis of the globins

机译:使用仿射变换的多种蛋白质结构的建模与叠加:割球菌分析

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A novel approach for analyzing multiple protein structures is presented. A family of related protein structures may be characterized by an affine model, obtained by applying tranformation matrices that permit both rotation and shear. The afine model and transformation matrices can be computed efficiently using a signle eigendecomposition. A novel method for finding corredpondences is also introduced. This method matches dcurvatures along the protein backbone. The algorithm is applied to analyze a set of seven glboin structures. Our method identifies 100 corresponding landmarks across all seven structures. Results show that most helices in globins can be identified by high curvature, with the exception of the C and D helices. Analysis of the superposition reveals that globins are most strongly conserved structurally in the mid-regions of the E and G helices.
机译:提出了一种分析多种蛋白质结构的新方法。 一种相关蛋白质结构的家族可以通过仿射模型来表征,通过施加允许旋转和剪切的变形矩阵而获得。 可以使用Signle EigEndeComposition有效地计算AFINE模型和转换矩阵。 还介绍了一种寻找腐护的新方法。 该方法沿蛋白质骨干匹配Dcurvatures。 应用该算法以分析一组七种Glboin结构。 我们的方法在所有七种结构上识别了100个相应的地标。 结果表明,球蛋白中的大多数螺旋可以通过高曲率来识别,除了C和D螺旋外。 叠加的分析表明,在E和G螺旋的中间区域结构上,球状环素最强烈地保守。

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